All Things Being Equal, Which of These Is the Most

question 35

Multiple Choice

All things being equal, which of these is the most parsimonious explanation for the change in the number of Hox genes from the last common ancestor of insects and vertebrates to ancestral vertebrates, as shown in the table above?

• A) The occurrence of seven independent duplications of individual Hox genes.
• B) The occurrence of two distinct duplications of the entire seven-gene cluster, followed by the loss of one cluster.
• C) The occurrence of a single duplication of the entire seven-gene cluster.
• D) Two distinct duplications of a three-gene cluster of Hox genes, followed by an independent duplication of an individual Hox gene.

Understand the basic principles of accounting information systems.

Recognize the importance and role of input devices and source documents in accounting systems.

Identify the use and purpose of various journals and ledgers in accounting systems.

Grasp the significance of internal controls and their components in safeguarding company assets and ensuring reliable financial reporting.

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Definitions:

Small Intestine

A part of the gastrointestinal tract between the stomach and the large intestine that absorbs nutrients and minerals from food.

Proteins

Large, complex molecules that play many critical roles in the body, including as enzymes, hormones, and antibodies.

Cecum

A pouch connected to the junction of the small and large intestines, playing a role in the digestive system.

Lymphoid Tissue

Part of the immune system made up of a network of lymphocytes (white blood cells) that protect the body from infections and diseases.